AU2003242915A1 - Optical disc drive apparatus, method for measuring tilt of an optical disc, and method for correcting tilt of an optical disc - Google Patents

Optical disc drive apparatus, method for measuring tilt of an optical disc, and method for correcting tilt of an optical disc

Info

Publication number
AU2003242915A1
AU2003242915A1 AU2003242915A AU2003242915A AU2003242915A1 AU 2003242915 A1 AU2003242915 A1 AU 2003242915A1 AU 2003242915 A AU2003242915 A AU 2003242915A AU 2003242915 A AU2003242915 A AU 2003242915A AU 2003242915 A1 AU2003242915 A1 AU 2003242915A1
Authority
AU
Australia
Prior art keywords
optical disc
measuring location
phi
tilt
measuring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
AU2003242915A
Other versions
AU2003242915A8 (en
Inventor
Ole K. Andersen
Jacobus M. Den Hollander
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of AU2003242915A8 publication Critical patent/AU2003242915A8/en
Publication of AU2003242915A1 publication Critical patent/AU2003242915A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/095—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0956—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/095—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier

Abstract

Tilt (theta(r, phi)) is measured in a measuring location (P(r, phi) optical disc ( 2 ). A pivotable objective lens ( 34 ) is brought to a first focus measuring location such as to focus a light beam ( 32 ) in a first anchor point (P 1 (r-Deltar 1 , phi))having the same angular coordinate phi as said measuring location (P(r, phi)) and having a small radial distance Deltar 1 from said measuring location. The objective lens is brought to a second focus measuring location such as to focus the light beam in a second anchor point (P 2 (r+Deltar 2 , phi)) having the same angular coordinate phi as said measuring location and having a small radial distance Deltar 2 from said measuring location, wherein said first and second anchor pints are located on opposite sides of said measuring location. Tilt in said measuring location is calculated from the coordinates of said two focus measuring locations of said objective lens.
AU2003242915A 2002-07-26 2003-06-26 Optical disc drive apparatus, method for measuring tilt of an optical disc, and method for correcting tilt of an optical disc Abandoned AU2003242915A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP02078075.5 2002-07-26
EP02078075 2002-07-26
PCT/IB2003/002810 WO2004015700A1 (en) 2002-07-26 2003-06-26 Optical disc drive apparatus, method for measuring tilt of an optical disc, and method for correcting tilt of an optical disc

Publications (2)

Publication Number Publication Date
AU2003242915A8 AU2003242915A8 (en) 2004-02-25
AU2003242915A1 true AU2003242915A1 (en) 2004-02-25

Family

ID=31502762

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2003242915A Abandoned AU2003242915A1 (en) 2002-07-26 2003-06-26 Optical disc drive apparatus, method for measuring tilt of an optical disc, and method for correcting tilt of an optical disc

Country Status (10)

Country Link
US (1) US7116619B2 (en)
EP (1) EP1527447B1 (en)
JP (1) JP4572114B2 (en)
KR (1) KR101001173B1 (en)
CN (1) CN1295693C (en)
AT (1) ATE364222T1 (en)
AU (1) AU2003242915A1 (en)
DE (1) DE60314253T2 (en)
TW (1) TWI333652B (en)
WO (1) WO2004015700A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7570547B2 (en) * 2005-08-22 2009-08-04 Konica Minolta Opto, Inc. Objective lens unit and optical pickup device

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2605776B2 (en) * 1988-02-03 1997-04-30 ヤマハ株式会社 Tilt servo circuit for optical disc playback device
JPH0758559B2 (en) * 1988-09-02 1995-06-21 シャープ株式会社 Optical pickup device
JP3193105B2 (en) * 1992-02-29 2001-07-30 日本ビクター株式会社 Tilt error detection device
JP3529556B2 (en) * 1996-07-18 2004-05-24 パイオニア株式会社 Method and apparatus for correcting coma aberration in optical pickup
US5881034A (en) * 1996-08-20 1999-03-09 Sony Corporation Apparatus for driving objective lens
US6151174A (en) * 1997-10-06 2000-11-21 U.S. Philips Corporation Device for optically scanning a record carrier
JP3443668B2 (en) * 1998-04-30 2003-09-08 富士通株式会社 Aberration correction method and aberration correction device
KR100370187B1 (en) * 1998-08-05 2003-03-17 삼성전자 주식회사 Optical recording/reproducing apparatus, tilt adjusting method therefor, and recording control method therefor
JP2000357338A (en) * 1999-06-15 2000-12-26 Sony Corp Device for driving recording medium and detection of tilt
JP2001236668A (en) * 1999-12-15 2001-08-31 Samsung Electro Mech Co Ltd Tilt detector and method
US6788627B2 (en) * 2000-06-27 2004-09-07 Matsushita Electric Industrial Co., Ltd. Optical recording and reproducing apparatus, tilt correction method, tilt correction program and medium
JP4400772B2 (en) * 2000-06-27 2010-01-20 パナソニック株式会社 Optical recording / reproducing apparatus, tilt correction method, program, and recording medium
JP3924440B2 (en) * 2001-05-17 2007-06-06 松下電器産業株式会社 Optical disc apparatus and control method thereof
JP2003248951A (en) * 2002-02-25 2003-09-05 Funai Electric Co Ltd Tilt control device for optical disk
WO2003075266A1 (en) * 2002-03-04 2003-09-12 Matsushita Electric Industrial Co., Ltd. Optical head and optical recording/reproducing device using it, and aberration correction method
JP2004062918A (en) * 2002-07-24 2004-02-26 Pioneer Electronic Corp Tilt servo device
JP3975139B2 (en) * 2002-08-30 2007-09-12 パイオニア株式会社 Tilt correction device and tilt correction method

Also Published As

Publication number Publication date
TW200415596A (en) 2004-08-16
JP4572114B2 (en) 2010-10-27
DE60314253T2 (en) 2008-01-31
ATE364222T1 (en) 2007-06-15
TWI333652B (en) 2010-11-21
EP1527447B1 (en) 2007-06-06
AU2003242915A8 (en) 2004-02-25
CN1672199A (en) 2005-09-21
KR20050019922A (en) 2005-03-03
WO2004015700A1 (en) 2004-02-19
DE60314253D1 (en) 2007-07-19
US20050265192A1 (en) 2005-12-01
EP1527447A1 (en) 2005-05-04
US7116619B2 (en) 2006-10-03
KR101001173B1 (en) 2010-12-15
JP2005534137A (en) 2005-11-10
WO2004015700A8 (en) 2005-03-17
CN1295693C (en) 2007-01-17

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase